Locking device for drawers of cabinets.



E. STUCK. LOCKING DEVICE FOR DRAWERS 0F CABINETS.

APPLICATION FILED JAN. 24, 1912.

1,076,528. Patented Oct. 21, 1913.

2 SHEETS-SHEET 1.

E. STUCK.

LOCKING DEVICE FOR DRAWERS 0F CABINETS.

APPLICATION FILED M1124. 1912 1,076,528. Patented Oct. 21, 1913.

2 SHEETS-SHEET 2.

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T6 AR E METAL CONSTRUC TION COMPANY, or JAMESTOWN', NEW YORK, a corrosion on NEW roan Specification of Letters Patent.

Patented Get. 21, ilgild.

Applicationfiled January 24:, 1912. Serial lilo. 673,241..

To all whom it may concern:

Be it known that l, EV RETT STUCK, acitizen of the United States, residing at Jamestown, in the county of Chautauquaand State of New York, have invented certain new and useful Improvements in Locking Devices for Drawers of Cabinets, of which the following is a specification.

My invention relates to locking devices for use more especially in connection: with filing cases and for other uses as: well.

An object of my invention is to simplify the construction of and increase its strength and durability. This and other objects of my invention will befully illustrated in the drawings, described in the specification andpointed-out in the claims at the end thereof. 1

In' the accompanying drawings, Figure 1 is a perspective view of the locking device as viewed from below the cover at-the rear, the parts being shown in the position they would occupy when. the drawers are unlocked. Fig. 2 is a view of the same parts shown in the position in which they would hold thedrawers locked. Figs. 3, 1 and 5 are detail views of the locking latch that is placed on the inside of the top plate of the cabinet at the front. Fig. 6 is a perspective;-

view of a cabinet with drawers partly broken away, partly exposing. the locking mechanism concealed within and showing the location thereof. view of the locking mechanism as viewed from the front, with the top plate partly broken away. Fig. 8 is a rear view of the locking mechanism as shown in Fig. 1, with the locking latch omitted. Fig. 9 is a front elevation of the supporting plate showing the lever pivotally mounted thereon, with the operating stem in section. (See section on line 9 4) in Fig. 10.) Fig. 10 is'a pla n view of the parts, looking at them in the di rection indicated by the arrow in Fig. 9. Fig. 11 is a detail view of' the locking rod 10 with one of the locking dogs thereon. Fig. 12 is a detail view of the crank 13 shown in the position illustrated in Fig.1, with the latch 16 shown he on the withdrawal of the key from the lock. Fig. 13 is a perspective view showing the locking mechanism from the rear, covered by a protecting shield. Fig.1 14;- is a detail view of the protecting shield.

the locking; mechanismat its forward endwith Fig. 7 is a; perspectiveheld back as it will In. the accompanying drawings like reference numerals indicate like parts.

In: the drawings-reference numeral 1 indicates acase havingdrawers 2, 3 therein, provided with an end 4: and a top 5 In the to 5 is provided the operating mechanism for the locking device. The top 5- is provided at its front with: a lock 6 having a keyhole therein and an operating stem 7 by which the locking mechanism is released for the purpose of locking the drawers in place. Each ofthe' drawers is provided with arecess- 8, which recess can be engaged by the dog. 9, which dog is mounted upon the vertical sliding bar 10. The dogs 9 are pivot-ally mounted upon the bar 10 and are held yieldingly in the position shown in Fig. 11 by the blade spring 9. This-bar 1 0 can be raised or lowered and' held ineither position by mechanism which I am about to describe.

Mounted to oscillate in suitable bearings provided in the top plate 5 of the case or cabinet is the rod-11' havingon its rear end the crank 12 to which is connected the vertical sliding bar 10. This rod is provided a crank 13,- which erank has a recess 14: cut therein. Immediately below this recess isprovided a stud 15, riveted onsaid crank,- on which is mounted to swing the latch 16; A pin 17 is provided on the crank 13. The'latch 16 is also provided with" a lug 19.- A spring 18 is coiled aroundthestud 15-, one end of which engages the-lug 1-9 on the latch 16, so that by this spring the latch is normally held with its shoulder 20 against the pin 17, this being the position in which it is shown in Figs. 1, 2 and 3.

The plate 5 is provided with a down and inwardly turned edge 21 on which is fas tened the supporting plate 22 by the screws 23,- 23, betweenwhich supporting plate and the downturned edge 21 is supported a number of operatingparts which I will now describe:

The plate 22 has the two semi-circular lugs 24, 25 struck up therein and bent toward each other to a parallel position, as shown in Fig. 9; These logs are perforated as indicated at 26-, andbetw-een them sup port=the pivot pin: 27 on which is mounted to oscillate the lever 28. The plate 22 is perforated at 29" and the downturned edge 38 in the plate 22.

the barrel of the lock is turned 21. is perforated at 30 immediately opposite thereto, both of the openings being square openings, in which openings are mounted to slide the square shank of the stem 7. This stem is provided with a pin-31 which engages with a slot 32 in the lever 28, so that as the stem 7 is pushed in and out the lever 28 is oscillated.

The lever 28 is stamped of sheet metal and has an outwardy projecting finger 33 thereon, which finger projects through slot The purpose of this finger 33 will presently be described.

The lock 6 is preferably a Yale lock and is provided on the in'nerend of its barrel with a crank 34 having a shoulder 35 thereon which engages with a stop 36, by which its rotation in one direction islimited. Also carried on the crank 34 is the pin 37 shown in Figs. 1, 2 and 8. When the parts are assembled this pin 37 bears against the latch 16, being normally in the position inclicated in Fig. 2, which is the position that the locking mechanism occupies when the drawers of the case are locked, and when by the key this pin 37 is moved to the left from the position shown in Figs. 2 and 8 to the posi tion shown'in Fig. 1, by which movement the crank 13 is rocked downwardly so as to uncover the opening 38.

The lever 28 is normally held in the position shown in Figs. 1 and 10 by the spring 40 which is coiled around the pivot pin 27 and has one end bearing against the plate 22, in which position the stem 7 is projected outwardly from the case \Vhen the stem 7 is pushed in, the finger 33 is withdrawn from the path of travel of the crank 13, permitting the crank 13 to cover the hole 38. With a key the barrel of the lock with its crank 34 can be rotated from the position shown in Fig. 8 to the position shown in Fig. 1, moving the crank 13 from the position shown in Fig. 2 to the position shown in Fig. 1, rotating the shaft 11 and lifting the lever 12 and the bar 10 connected thereto against the tension of the spring 41, which spring is preferably placed near the bottom of the case. As soon as the opening 38 is uncovered by this lifting of the latch, the finger 33 is pressed forward by the spring 40 and engages under the crank 13,

v holding the parts in the position shown in Fig. 1 with the bar, 10 elevated against the tension of the spring 41. The key can be turned backward, turning the barrel and the crank 34 to the position shown in Fig. 8, and the key can be withdrawn and the rod 10 will still remain elevated with the'dogs 9 lifted out of engagement with the recesses 8 of the drawers. When the key is withdrawn the barrel and the crank 34 will occupy the position shown in Fig. 8, and will hold the latch 16 back against the tension of its spring, as shown in Fig. 12. When the stem 7 is pressed in, the finger 33 is withdrawn from the path of travel of the crank 13 and the spring 41 acts to draw down the bar 10, causing the crank 13 to rock and cover the opening 38 and move the latch 16 above the pin 37, when the spring 18, acting on the latch 16, will draw it forward so as to engage with the pin 37, thus securely locking the crank 13 in its raised position, shown in Fig. 2, and the bar 10 and crank 12 in their lowest position. The bar 10 carries thereon a lug 42 which engages with a bufier 43 when the bar descends, by which the downward movement of the bar is limited. The plate 22 is provided with a lag 44 with which engages the crank 13 as it swings upward, by which the upward motion of the crank 13 is arrested at the same time that the downward motion of the bar 10 is arrested.

The operation'of the parts is as follows: When the drawers are locked in'position, the locking bar 10 will be down, with the dogs 9 in engagement with the recesses of the drawers. If a single drawer has been left out it can be inserted and as it goes in the rear edge of the drawer will engage with the dog-'9 and lift it and pass thereunder until it clears the dog 9, when the dog will engage the recess 8, locking the drawer firmly in position. The bar 10 and the crank 12 will be held in their lowest position through the shaft 11 and crank 13'which are held in their highest position, as illustrated in Fig. 2. l/Vhen the key is inserted in the lock and the crank 34 and pin 37 are turned, the pin 37 passes out from under the latch 16 and bears against the crank 13, moving it down from the position shown in Fig. 2 to the position shown in Fig. 1. When in this position the lever28 can swing and throw the finger 33 over the crank 13, looking it in the position shown in Fig. 1 against the tension of the spring 41. The lever 28 swings due to the torsion of the spring 40 by which it is engaged, and as it swings it pushes the stem 7 outward from the case. lVhen the key is turned backward in the lock 6, the pin 37 on the crank 34 engages the end of the latch 16 and moves it back to the position shown in Fig. 12. When the stem 7 is pushed in the spring 41 acts to pull the rod 10 and crank 12 down, rocking the shaft 11 and raising the crank 13. This raises the tip of the latch 16 over the pin 37 and the spring 18 presses it forward intp engagement with the pin, as shown in Fig. 2, thus securely locklng the crank 13 up and locking the bar 10 down, so that the bar cannot be raised even though a drawer be left out of the case so that the operator can reach it through the drawer opening from the front of the moving abaasas In order to prevent tampering with the of a spring pressed look having a crank on locking mechanism of the case when the top drawer is out, I provide the protecting shield 50 which is fastened to the supporting plate 22 by the screws 51. This shield is recessed to permit the shaft 11 to pass therethrough, but otherwise covers up all the parts that are connected with the lock and lock operating mechanism, so't'hat these parts can only be operated through the key and the stem 'Z that projects through the fr-ont-o'f"the casing. In this way it will be seen that I'have provided a very simple, strong and effective locking mechanism that is proof against being tampered with in the ordinary ways.

Having thus described my invention, what I claim as new and patentable is as follows:

"1. In a lock for a rock shaft the combination of a rock shaft having a crank on one end thereof, a lock capable of being moved to rotate said crank-against the tension of a spring, a dog for holding said crank in said rotated position.

2. In a lock for a rock shaft the combination of a rock shaft having a crank on one end thereof, a lock capable of being moved to rotate said crank against the tension of a spring, a spring pressed dog for holding said crank in said rotated position.

3. In a lock for a rock shaft the combinationof a rock shaft having a crank on one end thereof, a lock capable of being moved to rotate said crank against the tension of a spring, a spring pressed dog for holding said crank in said rotated position, a pin for withdrawing said dog from contact with said crank, permitting the spring to move said crank in the reverse position.

4. In a locking device, the combination of a rock shaft, a crank mounted thereon, said crank having a recess therein, a dog pivoted on said crank and movable part way across said recess, a crank movable in" said recess capable of engaging with said first named crank for rotating it in one direction.

5. In a locking device, the combination of arock shaft, a crank mounted thereon, said crank having a recess therein, a dog pivoted on said crank and movable partway across said recess, a crank movable in said recess capable of engaging with said first named crank for rotating it in one direction, and also capable of engaging under said dog for the purpose of holding said crank against rotation.

6. The combination in a locking device, of a spring pressed'rock shaft having a crank on the end thereof, a dog pivotally mountedon said crank, a lock adjacent to said crank having a pin on the end thereof capable of moving in one direction to engage with and turn said crank, and capable of in thereverse direction to engage with'said dog and hold said crank against rotation.

7. The combination in a locking .device,

the end there'ofya lock adjacent to said crank having a moving in one direction to engage with and turn said crank, a dog capable of moving across said crank when moved by said lock toretain it in position. I

8. The combination in a locking device,

ofa. spring pressed lock having a crank on the endthereof, alock adjacent to said crank having a pin on the end thereof, capable of moving in one direction to engage with and turn said crank, a dog capable of moving across said crank when moved by said lock to retain it in position, a pin for withdrawing said dog and releasing said crank.

9. In a locking device, the combination of a plate, a lever pivotally mounted therein, a pin moving through said plate and engaging with said lever at one end, the other end of said lever having a finger projecting pin on the end thereof, capable of I through an opening in said plate, said finger being capable of movement into and out of said opening when said lever is moved by said pin.

10. In a locking device, the combination of a plate, a lever pivotally mounted therein, a pin moving through said plate and engaging with said lever at one end, the other end of said lever having a finger projecting through an opening in said plate, said finger being capable of movement into and out of said opening when said lever is moved by said pin, a crank moving across said opening when said finger is withdrawn therefrom, and being locked therefrom when said finger is projected through said openlng.

11. In a locking. device, the combination of a plate, a lever pivotally mounted therein, a pin moving through said plate and engaging with said lever at one end, the other end of said lever having a finger projecting through an opening in said plate, said finger being capable of movement into and out of said opening when said lever is moved by said pin, a crank moving across said opening when said finger is withdrawn therefrom,

and being locked therefrom when said finger is projected through said opening, a lock having a key therefor for moving said crank away from said opening to permit the finger to move through said opening and lock said crank.

12. In a look, the combination of a crank, a lock mounted to rotate said crank in one direction, a hook pivotally mounted on said crank, said lock engaging with said hook tomove said hook idly back and forth when the crank is in one position, and to engage under said hook to lock said crank when the crank is in another position.

13. The combination in a locking device of a rock shaft, a spring for actuating said rock shaft in one direction, said rock shaft having a limited oscillating movement, ing said dogs from access from within the 10 dogs for locking said rock shaft at either casing. I V end of its movement, a manually operated In testimony whereof lt afix my signature stem for releasing the dog that looks it in presence of two Witnesses.

i at one end of its movement, and a key for EVERETT STUCK releasing the dog that locks it at the other end of its movement, a shield for covering Witnesses:

said dogs, making them inaccessible from B Q DAVIE, Within the casing, the casing itself protect 'ALGOT J. E. LARSON, 

